/*
 * [The "BSD licence"]
 * Copyright (c) 2011 Terence Parr
 * All rights reserved.
 *
 * Conversion to C#:
 * Copyright (c) 2011 Sam Harwell, Tunnel Vision Laboratories, LLC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

namespace Antlr4.StringTemplate
{
    using System.Collections.Generic;
    using CultureInfo = System.Globalization.CultureInfo;

/** A renderer for java.util.Date and Calendar objects. It understands a
 *  variety of format names as shown in formatToInt field.  By default
 *  it assumes "short" format.  A prefix of date: or time: shows only
 *  those components of the time object.
 */
public class DateRenderer : AttributeRenderer {
#if false
    public static readonly IDictionary<string,int> formatToInt =
        new Dictionary<string,int>() {
            {
                put("short", DateFormat.SHORT);
                put("medium", DateFormat.MEDIUM);
                put("long", DateFormat.LONG);
                put("full", DateFormat.FULL);

                put("date:short", DateFormat.SHORT);
                put("date:medium", DateFormat.MEDIUM);
                put("date:long", DateFormat.LONG);
                put("date:full", DateFormat.FULL);

                put("time:short", DateFormat.SHORT);
                put("time:medium", DateFormat.MEDIUM);
                put("time:long", DateFormat.LONG);
                put("time:full", DateFormat.FULL);
            }
        };
#endif

    public virtual string toString(object o, string formatString, CultureInfo locale) {
        Date d;
        if ( formatString==null ) formatString = "short";
        if ( o is Calendar ) d = ((Calendar)o).getTime();
        else d = (Date)o;
        Integer styleI = formatToInt.get(formatString);
        DateFormat f;
        if ( styleI==null ) f = new SimpleDateFormat(formatString);
        else {
            int style = styleI.intValue();
            if ( formatString.startsWith("date:") ) f = DateFormat.getDateInstance(style);
            else if ( formatString.startsWith("time:") ) f = DateFormat.getTimeInstance(style);
            else f = DateFormat.getDateTimeInstance(style, style);
        }
        return f.format(d);
    }
}
}
